Shareholders' Equity (Details) (USD $)	12 Months Ended																	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2014 Stock Options [Member]	Mar. 31, 2013 Stock Options [Member]	Mar. 31, 2012 Stock Options [Member]	Mar. 31, 2014 Stock Options [Member] Consultants [Member]	Mar. 31, 2013 Stock Options [Member] Consultants [Member]	Mar. 31, 2012 Stock Options [Member] Consultants [Member]	Mar. 31, 2014 Stock Options [Member] Executive Employees and Directors [Member]	Mar. 31, 2014 Stock Options [Member] Non-Executive Employees [Member]	Mar. 31, 2014 Restricted Stock [Member]	Mar. 31, 2013 Restricted Stock [Member]	Mar. 31, 2012 Restricted Stock [Member]	Mar. 31, 2014 Restricted Stock [Member] Minimum [Member]	Mar. 31, 2014 Restricted Stock [Member] Maximum [Member]	Jul. 23, 2013 Stock Compensation Plan [Member] Chief Executive officer [Member]	Mar. 31, 2014 2006 Amended Stock and Incentive Plan [Member] Plan	Mar. 31, 2014 2006 Amended Stock and Incentive Plan [Member] Stock Options [Member]	Mar. 31, 2014 2006 Amended Stock and Incentive Plan [Member] Stock Options [Member] Minimum [Member]	Mar. 31, 2014 2006 Amended Stock and Incentive Plan [Member] Stock Options [Member] Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of active plans for share-based compensation grants																		1
Number of shares reserved for share-based grants (in shares)																		3,450,000
Additional shares approved for share-based grants (in shares)																		750,000
Shares available for grant (in shares)																		821,496
Stock grants	21,653,835	21,005,582															300,000
Term of share-based payment award	10 years																			5 years	7 years
Vesting period															6 months	4 years			3 years
Fully vested options outstanding (in shares)	900,000
Share-based compensation and consulting expense	$ 1,436,000	$ 812,000	$ 685,000				$ 0	$ 2,000	$ 5,000
Weighted-average assumptions used to value the options granted [Abstract]
Expected life, in years				4 years 6 months 4 days	6 years	5 years 3 months 25 days
Risk-free interest rate (in hundredths)				1.36%	1.15%	1.57%
Expected volatility (in hundredths)				89.01%	89.03%	90.08%
Expected dividend yield (in hundredths)				0.00%	0.00%	0.00%
Forfeiture rate (in hundredths)										1.60%	18.00%
Stock options, number of shares [Roll Forward]
Outstanding, beginning of period (in shares)				2,016,000	2,083,000	2,066,000
Options granted (in shares)				939,000	188,000	140,000
Options exercised (in shares)				(346,000)	(40,000)	(94,000)
Options surrendered (in shares)				(280,000)	(215,000)	(29,000)
Outstanding, end of period (in shares)				2,329,000	2,016,000	2,083,000												1,428,043
Exercisable, end of period (in shares)				1,279,340
Stock options, weighted average exercise price [Roll Forward]
Outstanding, beginning of period (in dollars per share)				$ 3.51	$ 3.64	$ 3.39
Options granted (in dollars per share)				$ 2.57	$ 3.09	$ 6.66
Options exercised (in dollars per share)				$ 1.21	$ 3.75	$ 2.22
Options surrendered (in dollars per share)				$ 4.22	$ 4.36	$ 5.36
Outstanding, end of period (in dollars per share)				$ 3.39	$ 3.51	$ 3.64
Exercisable, end of period (in dollars per share)				$ 3.98
Stock options, additional disclosures [Abstract]
Weighted-average grant date fair value (in dollars per share)				$ 1.71	$ 2.26	$ 4.70
Options exercised, Aggregate intrinsic value				792,000	18,000	430,000
Outstanding, Aggregate intrinsic value, end of period				1,781,000	598,000	968,000
Exercisable, Aggregate intrinsic value, end of period				684,236
Outstanding, Weighted average remaining life in years				1 year 10 months 13 days	2 years 7 months 20 days	2 years 11 months 16 days
Exercisable, Weighted average remaining life in years				3 years 10 months 6 days
Fair value of stock options vested				435,000	490,000	398,000
Proceeds from stock options exercised	359,502	150,000	208,825	360,000	150,000	209,000
Restricted shares and warrants, number of shares [Roll Forward]
Balance, beginning of period (in shares)												180,000	70,000	55,000
Shares granted (in shares)												122,000	167,000	50,000
Shares vested (in shares)												(53,000)	(47,000)	(35,000)
Shares surrendered (in shares)												(102,000)	(10,000)
Balance, end of period (in shares)												147,000	180,000	70,000
Restricted shares, weighted average grant date fair value [Roll Forward]
Balance, beginning of period (in dollars per share)												$ 4.39	$ 6.30	$ 4.96
Shares granted (in dollars per share)												$ 3.06	$ 3.61	$ 6.80
Shares vested (in dollars per share)												$ 4.13	$ 4.76	$ 4.91
Shares surrendered (in dollars per share)												$ 4.38	$ 3.21
Balance, end of period (in dollars per share)												$ 3.38	$ 4.39	$ 6.30
Restricted shares and warrants, additional disclosures [Abstract]
Weighted average remaining life in years												2 years 2 months 23 days	1 year 6 months	0 years 11 months 12 days
Shares vested, Aggregate intrinsic value												221,000	225,000	170,000
Balance, end of period												540,000	790,000	443,000
Unrecognized share-based compensation expense	$ 1,750,460
Unrecognized compensation expense, weighted average period of recognition	2 years